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GM-720

A/C System Maintenance

Centre

9

iii. The LED displays “1” in flushing.

iv. Press "ENTER" key to do the empty plan calibration. Then the LED will

display “2” in flushing.

Note: If LED shows “ERR1”

please refer to the

APPENDIX: ALARM CODE TABLE

.

v. Put the 15 kg weight onto the scale pan and press “ENTER” key. Then

LED displays the weight value and adjusts the value to 15 by press “+” or

“-”key.

Note: if the weight is 20kg, the value must be set to 20.

vi. Press “ENTER” key to do the scale linear calibration. Then the LED

displays “END” to mean it’s successful for the calibration.

Note: if LED shows “ERR2”, please refer to the APPENDIX: ALARM

CODE TABLE.

vii. Then power off and replace and fasten the refrigerant tank onto the scale

pan.

B

Exchange dry filter

The dry filter must be exchange after used a period. The machine has set the
exchange time. When the dry filter reaches the life time, the LED will show
code “F004”. Now the dry filter must be exchanged.

i. Press and hold

(

VACUUM) key and power on the equipment.

ii. Press “START” key to do the first step automatically.

iii. Replace the used dry filter with a new one then press “ENTER” key.
iv. Input the dry filter ID. Please refer to the chapter

PARAMETER

SETTING

.

v. Power off and dry filter exchange procedure finish.

C

Change vacuum pump oil

i. When the pump oil became cream or the LED displays “F008”, the

vacuum pump oil must be changed.

Window

Drain port

Fill port

Summary of Contents for GM-720

Page 1: ...GM 720 A C System Maintenance Centre GM 720 A C System Maintenance Centre...

Page 2: ...lfunction of the machine Keep away from moving parts and rotating elements such as cooling fans alternators and heating components etc to avoid harm Wear protective clothing gloves and goggles As auto...

Page 3: ...es 1 3 Specifications 1 2 Functions 2 1 Primary functions 2 2 Subsidiary functions 2 3 Operation 3 1 Parts descriptions 3 2 First use 4 3 Recovery Recycling 5 4 Preparations before Flushing 5 5 Flushi...

Page 4: ...GM 720 A C System Maintenance Centre APPENDIX ALARM CODE TABLE 12...

Page 5: ...of A C system flushing effectively cleared the internal greasy and fouling to restore the A C system performance B With forward flushing reverse flushing and pulse flushing functions which greatly im...

Page 6: ...3 5MPa K Backlighting LED 2 Functions 1 Primary functions A Flushing B Recovery Recycling C Used oil discharging D Vacuum E New oil filling F Recharging 2 Subsidiary functions A Refrigerant supplying...

Page 7: ...nance Centre 3 3 Operation 1 Parts descriptions HP gauge New oil bottle Used oil bottle Operation panel Displayer LP gauge Switch for used oil discharge Switch for new oil adding HP port Auxiliary Por...

Page 8: ...nto the tank of equipment so that all of the functions can be run normally C Fix the refrigerant tank Recharging tank on the load cell From the back Unscrew the support screw Parameter increase key Pa...

Page 9: ...Recycling function B The LED displays the weight of refrigerant in the cleaning tank internal tank C Presses START key to run D It will stop running and discharge the used oil automatically when the...

Page 10: ...ce the flushing time should be more than 30 minutes Normally the good flushing time is about 45 minutes for car Note The flushing time does not include the time of recovery process Once the flushing i...

Page 11: ...7 New oil adding A Pour new oil into the new oil bottle Note add new oil more 20ml than the used oil drained out to avoid the air into the air conditioning system B After vacuum press the switch of t...

Page 12: ...ive user manual The unit is kg D Presses START key to run E Stop automatically after recharging finished Note In the filling process if LED displays alternately the remaining amount of filling and the...

Page 13: ...fer to the APPENDIX ALARM CODE TABLE vii Then power off and replace and fasten the refrigerant tank onto the scale pan B Exchange dry filter The dry filter must be exchange after used a period The mac...

Page 14: ...ime so that the recharging function can be run i Press and hold the flushing key to power on ii The LED displays the remained amount in the recharging tank iii Press the ENTER key iv When the LED disp...

Page 15: ...al worked time iv Code P total worked time of the vacuum pump When LED displays code P please press OK key to show the total worked time v Code F volume of refrigerant dealt with by dry filter When LE...

Page 16: ...0 6 Exchange dry filter The dry filter is life end F00 7 Vacuum pump maintenance Change the pump oil in time F00 9 No enough refrigerant in recharging tank Change a new tank of refrigerant F01 0 Prohi...

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